The paper aims to address the importance and demand for the technological development of waste heat recovery technologies for decarbonisation of heat. Increasing attention has been focusing on the decarbonisation of heat due to the concerns on environmental problems by burning fossil fuels for heating and the demand for highly efficient energy system. Energy-intensive industry sites contain a large amount of wasted heat, which have not been fully recovered and commonly dumped to the environment. The efficiently and effectively reuse the industry wasted heat is in high demand as one of the zero-emission heating solutions. The heat transport solutions including district heat networks and Mobilised Thermal Energy Storage System could be potential solutions to recover and reuse industry waste heat for either on-site or off-site application. The innovative technologies using thermochemical fluid to form a loss-free district heat network and integrating thermal energy storage system with heat to power technology-organic Rankine cycle are expected to be the future mainstream solutions as highly efficient integrated energy systems.

Keywords:
Decarbonisation of Heat; Waste Heat Recovery; Thermal Energy Storage; Integrated Energy System